The invention provides a fifth product in a series set of tea drinks suitable for being drunk by people with diabetes. The tea drink comprises raw membranous milkvetch root, coix seed and malt, and can be prepared into the tea drink, capsules, tablets and pills, as well as syrup, decoction pieces and other various preparations so as to facilitate the drinking by men, women, old and young people. The health care product combines the multiple effects of benefiting qi, consolidating exterior, draining pus, expelling toxin, promoting urination, promoting granulation, relieving qi deficiency, asthenia, spontaneous perspiration and edema, treating chronic nephritis diabetes and the diabetes, eliminating the edema, helping digestion, promoting urination, preventing cancers, enabling the face of people to be red, helping digestion, harmonizing spleen-stomach, treating abdominal swelling and inappetence, relieving dyspepsia, breaking cold qi, helping digestion, harmonizing spleen-stomach, removing restlessness, breaking abdominal mass, reinforcing the spleen and stomach deficiency and the like, takes conditioning as the basis and can control blood sugar at the normal level by reasonable matching of the tea drink.